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Record 31dcfcb13c7b406298f8d65fafcaa44b

FAIL

Verdict and provenance first; raw prompt/response/reasoning below, collapsed.

✕FAILanswered "ANSWER: 64" · model Gemma 3 27B

finish_reason: stop · tokens in/out: 273/737 · cost: $0.000248 · latency: 10714.4 ms

code_tracetemplatestop

verifier_detail: kind=code_trace;campaign=1;query=final_value;detail=foil:truncating_modulo;n_stmts=31;trace_len=37;traps=aliasing_on=1;late_binding_on=1;shadowing_on=1;inclusive_range_trap_on=0;negative_modulo_on=1;mutable_default_on=1;confusability=0

trap kind(s) this world was seeded for: aliasing_on=1

lineage: 31dcfcb1

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Why did it fail? Nemotron 3 Ultra · live on Nebius Token Factory

Ultra reads the prompt, this answer, the verified correct answer and the difficulty settings, then explains the mistake. The verifier's own classification is shown next to it for comparison.

Prompt 750 chars · 273 tokens in
Here is a short Python program.

```python
base = 2
codes = [0, 1, 2]
quota = 4
for cur in codes:
    quota = len(codes) % 4
    quota += cur
batch = [5, 2]
queue = batch
queue[0] = 16
base += batch[0]
score = 2

def bump(amt):
    return amt + score

score += 6
base += bump(5)

def measure(acc):
    quota = acc * 2 + 1
    return quota + 1

step = measure(5)
base += quota + step
reserve = base - 53
level = reserve % 4
base += level

def scale(q, bag=[]):
    bag.append(q)
    return len(bag) + q

total = scale(2)
credit = scale(7)
base += credit
base += len(codes)
base += quota
```

After this program runs, what is the value of `base`? Work through it carefully, then give the final answer on its own last line as `ANSWER: <python literal>`.
Response 737 tokens out · finish: stop
Let's trace the execution of the Python code step by step.

1. `base = 2`
2. `codes = [0, 1, 2]`
3. `quota = 4`
4. Loop:
   - `cur = 0`: `quota = len(codes) % 4 = 3 % 4 = 3`. `quota += cur = 3 + 0 = 3`.
   - `cur = 1`: `quota = len(codes) % 4 = 3 % 4 = 3`. `quota += cur = 3 + 1 = 4`.
   - `cur = 2`: `quota = len(codes) % 4 = 3 % 4 = 3`. `quota += cur = 3 + 2 = 5`.
5. `batch = [5, 2]`
6. `queue = batch` (queue now refers to the same list as batch)
7. `queue[0] = 16` (batch[0] is now 16, so batch is [16, 2])
8. `base += batch[0] = base + 16 = 2 + 16 = 18`
9. `score = 2`
10. `def bump(amt): return amt + score`
11. `score += 6 = 2 + 6 = 8`
12. `base += bump(5) = base + (5 + score) = base + (5 + 8) = base + 13 = 18 + 13 = 31`
13. `def measure(acc): quota = acc * 2 + 1; return quota + 1`
14. `step = measure(5) = (5 * 2 + 1) + 1 = (10 + 1) + 1 = 11 + 1 = 12`
15. `base += quota + step = base + 5 + 12 = base + 17 = 31 + 17 = 48`
16. `reserve = base - 53 = 48 - 53 = -5`
17. `level = reserve % 4 = -5 % 4 = -1`
18. `base += level = base + (-1) = 48 - 1 = 47`
19. `def scale(q, bag=[]): bag.append(q); return len(bag) + q`
20. `total = scale(2)`: `bag = [2]`, returns `len(bag) + 2 = 1 + 2 = 3`
21. `credit = scale(7)`: `bag = [2, 7]`, returns `len(bag) + 7 = 2 + 7 = 9`
22. `base += credit = base + 9 = 47 + 9 = 56`
23. `base += len(codes) = base + 3 = 56 + 3 = 59`
24. `base += quota = base + 5 = 59 + 5 = 64`

ANSWER: 64
Reasoning not captured

(no reasoning captured)

Realized dims 17
dimvalue
aliasing_on1.0
answer_size2.0
distractor_fraction0.0
identifier_confusability0.0
inclusive_range_trap_on0.0
late_binding_on1.0
max_nesting1.0
mutable_default_on1.0
n_closures1.0
n_foil_matches1.0
n_live_aliases1.0
n_statements31.0
n_variables11.0
negative_modulo_on1.0
shadowing_on1.0
trace_length37.0
traps_on5.0
Latent params 11
paramvalue
aliasing_on1.0
distractor_fraction0.0
identifier_confusability0.0
inclusive_range_trap_on0.0
late_binding_on1.0
max_nesting1.0
mutable_default_on1.0
n_statements18.0
n_variables3.0
negative_modulo_on1.0
shadowing_on1.0